The Light of the World

Season 2 Episode 4

Stained glass image of the risen Christ appearing to Mary Magdalene—Reformed Christology emphasizing Jesus as the resurrected light of the world.

Special Guest: Zach Humm

Jesus, the Light of the World

John 8:12. Jesus says, “I am the light of the world.” You’ve probably heard that before—maybe a lot. The thing is, we can hear it so often that it almost fades into the background. In this episode of The Restless Theologian, part of our Christology series, I talk with Zach Humm about what Jesus meant by that. Not just in a nice, poetic way, but in the middle of real spiritual darkness, real human need, and the reality of sin.

Light in the Old Testament

Light in the Bible isn’t just about brightness—it’s about presence. In the wilderness, Israel had the pillar of fire to lead them. Isaiah promised that a light would come for the nations. Over and over, light is tied to God’s guidance, His salvation, His being right there with His people. So when Jesus calls Himself the light of the world, He’s claiming divinity. He’s saying He’s the fulfillment of those promises, the same presence the prophets pointed to.

Light and Darkness in John’s Gospel

John’s Gospel keeps this contrast front and center—light tied to life and truth, darkness tied to sin and unbelief. When Jesus says He’s the light, He’s giving hope to those who will follow Him. But He’s also exposing sin, and that’s not comfortable. His coming draws a line between belief and rejection. You see the same kind of dividing line in The Lamb of God episode—there’s no middle ground.

Reflecting the Light of Christ

Here’s the thing—Christians aren’t the light. We carry the light. We reflect it. Walking in the light means living in obedience, showing His truth in how we live, and refusing to hide in the dark. It’s not about us being impressive. It’s about making Him visible.

Why Some Reject the Light

The Bible says it plainly. Some love darkness because it hides what they do. John 3:19–20 makes it clear—stepping into the light means exposing sin. And that means repentance. That’s why some turn away. They’d rather keep the dark than face the truth.

The Light That Overcomes the Darkness

Here’s the good news—darkness doesn’t win. It can’t. Jesus’ light keeps shining, no matter how heavy the night feels. The same Christ we see here is the same One we talk about in The Son of God episode—unchanging, victorious, and worthy of our trust.